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Suppose we have a sorted array arr and a target value, we have to find the index when the target is found. If that is not present, then return the index where it would be if it were inserted in order.So, if the input is like [1, 3, 4, 6, 6], and target = 5, then the output will be 3, as we can insert 5 at index 3, so the array will be [1, 3, 4, 5, 6, 6]To solve this, we will follow these steps−n := size of Aif n < 1, then −return 0low := 0, high ... Read More
Selenium IDE by default has a language system commonly called Selenese. It is a group of commands used to perform operations on the web. It primarily helps to develop scripts in Selenium IDE.It can verify if an element is present on a screen, alerts, Ajax calls, links and many more. There are three types of commands used in Selenese. They are as the following −Actions − These are the commands which can change the condition of an application. For example, clicking a checkbox, submitting a form, selecting an option from dropdown. In case the action is not performed on the ... Read More
Suppose we have an array num and another value val, we have to remove all instances of that value in-place and find the new length.So, if the input is like [0, 1, 5, 5, 3, 0, 4, 5] 5, then the output will be 5.To solve this, we will follow these steps −count := 0for each index i of numsif nums[i] is not equal to val, then −nums[count] := nums[i]count := count + 1return countExampleLet us see the following implementation to get a better understanding − Live Democlass Solution: def removeElement(self, nums, val): count = 0 ... Read More
The name of the web drivers supported by Selenium are listed below −Google Chrome Driver [ ChromeDriver() supports chrome ]HTML Unit Driver [ WebClient() supports chrome, firefox and IE ]Safari Driver [ SafariDriver() supports Safari ]IOS Driver [ IOSDriver() supports ios ]Android Driver [ AndroidDriver() supports Android ]OperaChromium Driver [ ChromeDriver() supports opera ]Gecko Driver [ FirefoxDriver() supports firefox ]Microsoft WebDriver [ InternetExplorerDriver() supports IE ]EventFiring WebDriver [ EventFiring Driver() supports majority of browsers ]Code Implementation with Firefox driverExampleimport org.openqa.selenium.By; import org.openqa.selenium.Keys; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.firefox.FirefoxDriver; import java.util.concurrent.TimeUnit; public class BrowserDriverScript { public static void main(String[] args) ... Read More
Selenium was introduced as a part of version 1.0 of Selenium. Selenium WebDriver was introduced as a part of version 2.0 of Selenium. Selenium RC is deprecated and obsolete now. Though some users still use Selenium RC, the support for it is not there anymore.Selenium RC enabled the feature of recording scripts in multiple browsers namely Chrome, Safari, IE and so on. Also, it had communicated with the browser via the Selenium RC server.Selenium Web Driver supported cross browser testing and did not require the Selenium Server which enhanced its speed of execution. Overall Selenium RC had an architecture which ... Read More
Selenium Grid is a tool designed to distribute tests across more than one browser and environments. With this concept, we can trigger numerous test cases simultaneously on various devices and platforms. In short, it allows parallel execution.Thus Selenium Grid helps to achieve concurrent test execution saving a large portion of resources.So what are the advantages of using Selenium Grid?Parallel execution results in saving a considerable amount of resources.Allows cross browser testing.With the help of more than one machine nodes, test execution can be scattered and then executed.In Selenium Grid, a hub is a server that monitors concurrent execution on various ... Read More
Selenium Web Driver architecture in a simplified diagram is described below:Let us now understand the Selenium Web Driver Architecture. Selenium WebDriver API enables interaction between browsers and browser drivers. This architecture consists of four layers namely the Selenium Client Library, JSON Wire Protocol, Browser Drivers and Browsers.Selenium Client Library consists of languages like Java, Ruby, Python, C# and so on. After the test cases are triggered, entire Selenium code will be converted to Json format.JSON stands for Javascript Object Notation. It takes up the task of transferring information from the server to the client. JSON Wire Protocol is primarily responsible ... Read More
Answer: Selenium is an automation testing framework or suite developed by Jason Huggins in the year 2004. It has been upgraded several times in the past. Selenium WebDriver 2.0 came in the market in the year 2011, 3.0 in the year 2016 and currently the latest version is 4.0.Selenium is used to create automation scripts for verifying functional requirements in web applications thus reducing the manual testing efforts and increasing quality and productivity. It also supports a vast range of browsers and platforms.Selenium is not a standalone tool; it is rather considered as a package of multiple tools so it ... Read More
The checked attribute of the element specifies that the input type checkbox is checked when the web page loads. You can also use this attribute with input type radio.Following is the syntax −Above, we have set it checked since we wanted the checkbox to be selected when the web page loads.Let us now see an example to implement the checked attribute of the element −Example Live Demo Register Id: Password: DOB: Telephone: Email: Newsletter Subscription: Submit OutputIn the above example, we have a form with a button − Id: Password: DOB: Telephone: Email: Newsletter ... Read More
Heap queue is a special tree structure in which each parent node is less than or equal to its child node. In python it is implemented using the heapq module. It is very useful is implementing priority queues where the queue item with higher weight is given more priority in processing.Create a HeapA heap queue is created by using python’s inbuilt library named heapq. This library has the relevant functions to carry out various operations on a heap data structure. Below is a list of these functions.heapify – This function converts a regular list to a heap. In the resulting heap ... Read More